Yes a human body is divisible but Jesus’ humanity is not his divinity, which is indivisible.
You really are tying yourself up in knots.
So we have three possibilities:
1. Jesus was not made up of human cells, tissues, molecules etc - in which case he wasn't human as humans are made up of human cells, tissues, molecules etc.
2. Jesus was made up of human cells, tissues, molecules etc - in which case he was divisible and therefore (by your definition) not god.
3. The human and the god are completely separate things and therefore both divisible and one is not the other - in which case god did not become human.
There are the logical conclusions from your assertions - none seem to support your (completely unevidenced) faith position.
And then let's return to the notion that you folk seems to consider god to be three elements - hmm divisible, so by your own argument the trinity cannot be god, although (by your argument) if one element is in itself indivisible, then this could be god.
Not, of course, that I buy into your concepts of 'indivisibility', 'divinity' or the need for a necessary entity/being. Just shooting your illogical fish in a barrel.